doesn't quite live up to the movie that played in your head while you read the book. Yet "The Hunger Games" serves as an often riveting, occasionally underwhelming chronicle of a competition forcing teenagers to kill each other, and the brave resilience of the world's best big sister.

), whose name is called in just her first year of eligibility. The games, for the three of you who haven't read about them, consist of 24 randomly selected kids (a boy and a girl from each of 12 districts, aged 12-18 and dubbed "Tributes") battling until only one remains, with fewer upsets and far more swords than the

. The rich leaders of Panem created the deadly competition to remind the poor, starving masses of their inferiority by broadcasting this governmentally organized bloodbath every year. No one except the ornately dressed 1 percent in the Capitol enjoys this mandatory reality show, despite an apparent total absence of programming when the Hunger Games aren't on.

) who makes her find strength and trust in a boy society expects to hunt and kill her. Though, grumble grumble, the book more fully captures the complications of their relationship, every look Katniss and Peeta exchange bests all of the Edward/Bella staring contests combined. (Not saying much, but worth recognizing.)

") reveals his inexperience with action. The film's few set pieces suffer from repetitive chaos--numerous death scenes, including an attack of genetically engineered wasps, look ordinary compared with a breathless minute leading up to the games' beginning. As Katniss waits to defend her life, Lawrence, wonderfully strategizing and emoting without words, certainly makes her heroine personify the phrase, "This is really happening."

While Katniss' opponents possess little of the personality and menace that makes them so deliciously terrifying on the page, several actors squeeze the most out of small roles:

, less bumbling than imagined as boozing former Games winner Haymitch, who instructs the Tributes, "Embrace the probability of your imminent death."

In an alternate universe that doesn't require blockbuster teen movies to court a PG-13 rating, there's a spectacular R-rated, David Fincher or Ridley Scott-helmed version of "The Hunger Games" that creates a truly nightmarish vision of unimaginable cruelty and uplifting courage. Ross' alternately shocking and serene world, however limited in imagination, maintains the political and survivalist power of a story about leaders who haven't experienced life on the bottom and a young girl fiercely determined to remain the head of her family.

Unlike most violent movies, "The Hunger Games" derives no pleasure from its casualties and, thankfully, features none of the acts on the soundtrack. If anything would have soured this effectively serious sci-fi/action/drama/romance, it's teenage murders followed by